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acpi-cpufreq: Fail initialization if driver cannot be registered

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Make acpi_cpufreq_init() return error codes when the driver cannot be
registered so that the module doesn't stay useless in memory and so
that acpi_cpufreq_exit() doesn't attempt to unregister things that
have never been registered when the module is unloaded.

Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Rafael J. Wysocki 2013-10-25 16:22:47 +02:00
parent d3c345dbc7
commit 75c0758137
1 changed files with 4 additions and 4 deletions
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8
drivers/cpufreq/acpi-cpufreq.c
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@ -986,12 +986,12 @@ static int __init acpi_cpufreq_init(void)
{
int ret;
if (acpi_disabled)
return -ENODEV;
/* don't keep reloading if cpufreq_driver exists */
if (cpufreq_get_current_driver())
return 0;
if (acpi_disabled)
return 0;
return -EEXIST;
pr_debug("acpi_cpufreq_init\n");